Unsatisfactory resolution from Academic Achievement Institute

The situation with Academic Achievement Institute has gotten worse. Now they're claiming I never purchased the upgrade plan, despite me providing the receipt and reference number REF-B451DA36 multiple times.

Dear valued customer, Thank you for bringing your concerns about our t-shirt to our attention. We at Academic Achievement Institute are committed to product excellence and customer satisfaction. After a thorough investigation of your complaint, our technical team has confirmed that there was indeed a manufacturing defect in the batch produced on May 14, 2025. We have since corrected this issue in our production process. As a resolution, we would like to: 1. Arrange for immediate pickup of the defective t-shirt 2. Deliver a replacement from our newest production line 3. Extend your warranty by an additional 12 months 4. Include a complementary t-shirt accessory kit valued at $374.70 Please contact our dedicated resolution team at support@Academic Achievement Institute.com with your preferred delivery date and time, referencing case number REF-B451DA36. We truly value your business and appreciate the opportunity to make this right. Best regards, William Thomas Customer Retention Director Academic Achievement Institute